##cast concrete segment ##al bridges , rather than casting the bridge elements in place , and used a unique machine , designed and constructed by deal s . r . l . of italy and costing about $ 1 million , to move the pieces into place . during the construction , 2 @ . @ 2 million cubic yards of earth ##work was used , 350 @ , @ 000 cubic yards of concrete was mixed on site , and 300 @ , @ 000 square feet of retaining walls were built . additionally , 40 @ , @ 000 feet of drilled shafts and 75 @ , @ 000 linear feet of drainage pipe were completed . in addition to the construction of 43 permanent bridges
##cast concrete segmental bridges, rather than casting the bridge elements in place, and used a unique machine, designed and constructed by deal s. r. l. of italy and costing about $ 1 million, to move the pieces into place. during the construction, 2 @. @ 2 million cubic yards of earthwork was used, 350 @, @ 000 cubic yards of concrete was mixed on site, and 300 @, @ 000 square feet of retaining walls were built. additionally, 40 @, @ 000 feet of drilled shafts and 75 @, @ 000 linear feet of drainage pipe were completed. in addition to the construction of 43 permanent bridges